New approach for the estimation of soil heat flux for the Pampa Biome

Authors

  • Leugim Corteze Romio Universidade Federal do Pampa - Campus Itaqui-RS
  • Tamíres Zimmer Universidade Federal de Santa Maria, RS
  • Débora Regina Roberti Universidade Federal de Santa Maria, RS
  • Lidiane Buligon Universidade Federal de Santa Maria, RS

DOI:

https://doi.org/10.5902/2179460X30679

Keywords:

Soil Heat Flux, Pampa Biome, Surface Energy Balance

Abstract

The study of the thermal properties of the soil and the variables dependent on these properties is very important for the understanding of the surface energy balance. Among the main variables, there is the soil heat flux, especially because it allows the verification of the influences that occur in the biome of a region as temperature variation occurs. This work intend to estimate the coefficient of thermal conductivity and, thus, to obtain the values for the soil heat flux. The data used to estimate the parameters were obtained from an experimental site located in the city of Pedras Altas-RS. Two equations were used, the first one defined by the Fourier Heat Conduction Law (discretized) and the second one a modification of the first one including a k coefficient, named “modeling error”. Based on the results obtained it can be verified that the modified equation presented better results, when compared with the classical solution.

Downloads

Download data is not yet available.

References

An, K., Wang, W., Zhao, Y., Huang, W., Chen, L., Zhang, Z., Wang, Q., Li, W. (2016). Estimation from soil temperature of soil thermal diffusivity and heat flux in sub-surface layers. Boundary-Layer Meteorology, 158, 473–488.

Carslaw, H. S., Jaeger, J. C. (1959). Conduction of Heat in Solids, 2 o edn. Oxford University Press, London.

da Cunha, N. G., da Costa Silveira, R. J., Severo, C. R. S., Mendes, R. G., da Silva, J. B., Duarte, L. R., Schumacher, R. L. (2005). Estudo dos Solos do Município de Pedras Altas-RS. Embrapa Clima Temperado, Pelotas.

Kustas, W. P., Daughtry, C. S. T. (1990). Estimation of the soil heat flux/net radiation ratio from spectral data. Agricultural and Forest Meteorology, 49, 205–223.

Liebethal, C., Foken, T. (2007). Evaluation of six parameterization approaches for the ground heat flux. Theoretical and Applied Climatology, 88, 43–56.

Oke, T. R. (1987). Boundary Layer Climates, 2 o edn. Routledge, London.

Russel, E. S., Liu, H., Gao, Z., Finn, D., Lamb, B. (2015). Impacts of soil heat flux calculation methods on the surface energy balance closure. Agricultural and Forest Meteorology, 215, 189–200.

Published

2018-03-22

How to Cite

Romio, L. C., Zimmer, T., Roberti, D. R., & Buligon, L. (2018). New approach for the estimation of soil heat flux for the Pampa Biome. Ciência E Natura, 40, 76–81. https://doi.org/10.5902/2179460X30679

Most read articles by the same author(s)

<< < 1 2 3 4 5 6 7 > >>